Heavy-duty gas turbine turbine blade positioning tool

Abstract

The present application relates to the technical field of turbine blade positioning, and particularly relates to a heavy-duty gas turbine turbine blade positioning tool, which comprises a positioning base, a positioning locking groove is arranged through the positioning base, one end of the positioning locking groove is provided with a heavy-duty gas turbine turbine blade mounting station, a limiting part is arranged on the mounting station, the limiting part is matched with the external shape of a tenon of the heavy-duty gas turbine turbine blade, and the limiting part is suitable for clamping and limiting the tenon; a positioning locker is arranged in the positioning locking groove, at least one pressing part is arranged at one end of the positioning locker, and the pressing part is suitable for being matched with and abutting against and locking a gas inlet hole at the tail of the tenon. The positioning locker is used for limiting the sliding of the turbine blade on the mounting station, so that the blade displacement caused by the shaking of a cutting machine during the cutting of the turbine blade can be avoided, and the accuracy of cutting positioning is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of turbine blade positioning, in particular to a heavy-duty gas turbine turbine blade positioning tool. BACKGROUND

[0002] As a core hot end component of a heavy-duty gas turbine, a turbine blade has the characteristics of hundreds of blades per stage, twisted structure, complex shape, large size and mass, and obvious differences in microstructure between different parts of the as-cast and heat-treated blades. In addition, due to the long-term service of the turbine blade in a high-temperature, high-pressure and hot-corrosion working environment, the damage degree of the microstructure of the blade varies greatly in different parts. The evaluation of the microstructure and mechanical properties of the turbine blade is mainly through cutting and dissection of the blade to analyze and compare the differences in the microstructure and mechanical properties of different parts of the blade. However, due to the shape and volume characteristics of the turbine blade, when the turbine blade is clamped by using the original clamp of the wire cutting machine, it is difficult to determine the cutting reference of the same blade, which may lead to difficulties in corresponding and comparing the microstructure and mechanical properties of the same blade, and thus the microstructure and mechanical properties of the turbine blade cannot be accurately evaluated.

[0003] The blade clamping fixture in the prior art positions the blade by cooperating with a positioning mold, an adjusting block and an operating member. The positioning mold includes a lower positioning surface formed on the upper surface and corresponding to the feature points of the outer side of the side plate to bear the outer side of the side plate, and at least one side positioning surface corresponding to the side surface of the side plate and abutting against the side surface of the side plate. The adjusting block is installed on the other side of the lower positioning surface relative to the side positioning surface. The operating member drives the adjusting block to move relative to the side positioning surface to tighten or release the side plate. The fixture is mainly used for clamping and positioning the turbine blade of an aero-engine. Since the size of the turbine blade of a heavy-duty gas turbine is much larger than that of the turbine blade of an aero-engine, the turbine blade may be clamped in a head-heavy and foot-light manner when the turbine blade is clamped by using the fixture. Moreover, the large size of the turbine blade makes it inconvenient to vertically cut and dissect the turbine blade on the wire cutting machine. When the turbine blade is clamped by using the fixture, the blade may be displaced due to the shaking of the cutting machine during cutting, thereby causing inaccurate cutting positioning. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to overcome the defect that the blade clamping fixture in the prior art may cause displacement of the turbine blade during cutting after clamping and positioning the turbine blade of a heavy-duty gas turbine, thereby providing a heavy-duty gas turbine turbine blade positioning tool.

[0005] To solve the above technical problem, the present application provides a heavy-duty gas turbine turbine blade positioning tool, comprising:

[0006] The positioning base is provided with a positioning and locking groove, and one end of the positioning and locking groove is provided with a heavy-duty gas turbine turbine blade mounting station.

[0007] The positioning and locking device is mounted in the positioning and locking groove, and one end of the positioning and locking device is provided with at least one clamping piece.

[0008] Optionally, the positioning and locking device comprises:

[0009] The locking device guide base is provided with a guide block groove in the inside, and the locking device guide base is provided with a locking hole, the locking hole penetrates the locking device guide base, and the guide block groove is communicated;

[0010] The locking block is mounted in the guide block groove, and one side of the locking block is aligned with the locking hole, and the side of the locking block facing the opening of the guide block groove is provided with a positioning boss;

[0011] The locking positioning pin is mounted in the guide block groove, and the side of the locking positioning pin facing the guide block groove is provided with a positioning groove, and the positioning boss is adapted to be slidingly matched with the positioning groove, and the clamping piece is arranged at the end of the locking positioning pin;

[0012] The fixing piece is arranged to penetrate the locking hole and abut against the locking block, and under the abutting force of the fixing piece, the locking block moves towards the locking positioning pin so that the positioning boss abuts against the positioning groove.

[0013] Optionally, the locking block is provided with a pair of locking positioning pins arranged on the two sides of the locking block.

[0014] Optionally, a tapered groove is arranged between the pair of locking blocks, the fixing piece extends into the tapered groove, and the fixing piece is connected with the tapered groove in a matched manner.

[0015] Optionally, the fixing piece is a tapered locking screw plug, the tapered locking screw plug is provided with external threads, the tapered groove is provided with internal threads, and the tapered locking screw plug is threadedly connected with the tapered groove.

[0016] Optionally, the air inlet hole is a waist-round groove, one of the clamping pieces is a waist-round positioning pin head, and the other clamping piece is a polygonal positioning pin head, and the edges on the outer circumferential side of the polygonal positioning pin head are adapted to abut against the inner side wall of the air inlet hole.

[0017] Optionally, the intermediate distance between the waist-round positioning pin head and the polygonal positioning pin head is equal to the center distance between the two air inlet holes of the tenon tail.

[0018] Optionally, at least one side of the positioning base is provided with a mounting plate, and the mounting plate is provided with a mounting hole.

[0019] Optionally, the mounting station is a conical groove, and the limiting part is a limiting protrusion arranged on the inner wall of the conical groove.

[0020] Optionally, the limiting protrusions are arranged at intervals on the inner wall of the conical groove.

[0021] The technical scheme of the present application has the following advantages:

[0022] 1. The heavy-duty gas turbine turbine blade positioning tool provided by the present application comprises a positioning base, a positioning locking groove is arranged through the positioning base, one end of the positioning locking groove is provided with a heavy-duty gas turbine turbine blade mounting station, a limiting part is arranged on the mounting station, the limiting part is matched with the outer shape of a tenon of the heavy-duty gas turbine turbine blade, and the limiting part is suitable for clamping and limiting the tenon; a positioning locker is arranged in the positioning locking groove, and at least one pressing piece is arranged at one end of the positioning locker, and the pressing piece is suitable for abutting and locking with an air inlet hole at the tail of the tenon.

[0023] When the heavy-duty gas turbine turbine blade is cut after being fixed by the turbine blade positioning tool, the tenon at the tail of the turbine blade is slid from one side of the mounting station and is arranged on the mounting station of the positioning base, the limiting part is used for limiting the tenon of the turbine blade, then the positioning locker is arranged in the positioning locking groove, the pressing piece extends into the air inlet hole at the tail of the tenon and abuts and cooperates with the air inlet hole, so as to further limit the sliding of the turbine blade in the mounting station, and the turbine blade can be stably fixed in the mounting station. By limiting the sliding of the turbine blade in the mounting station by the positioning locker, the blade displacement caused by the shaking of the cutting machine during cutting of the turbine blade can be avoided, so that the accuracy of cutting positioning is ensured.

[0024] 2. The heavy-duty gas turbine turbine blade positioning tool provided by the present application, the positioning locker comprises: a locker guide base, a guide block groove is arranged in the locker guide base, a locking hole is arranged on the locker guide base, the locking hole penetrates through the locker guide base and is communicated with the guide block groove; a locking sliding block is arranged in the guide block groove, one side of the locking sliding block is aligned with the locking hole, and a positioning protrusion is arranged on the side of the locking sliding block facing the opening of the guide block groove; a locking positioning pin is arranged in the guide block groove, a positioning groove is arranged on the side of the locking positioning pin facing the guide block groove, the positioning protrusion is suitable for sliding cooperation with the positioning groove, and the pressing piece is arranged at the end of the locking positioning pin; a fixing piece is arranged in the locking hole and is in abutting arrangement with the locking sliding block, under the abutting force of the fixing piece, the locking sliding block moves towards the locking positioning pin so that the positioning protrusion is in abutting and cooperating arrangement with the positioning groove.

[0025] When the positioning lock is used to limit the turbine blade, first, the locking slider is installed in the guide slider groove of the locking guide, then the locking positioning pin is installed from the opening end of the guide slider groove, and finally the fixing member is installed from the locking hole. The fixing member is fixedly connected with the locking hole to apply a clamping force to the locking slider, so that the positioning boss is in abutment with the positioning groove, and the clamping member at the end of the locking positioning pin is in close abutment with the air inlet hole at the tail of the tenon.

[0026] 3. The heavy-duty gas turbine turbine blade positioning tool provided by the present application is provided with a pair of locking sliders, and a pair of locking positioning pins are arranged on the two sides of the locking sliders. The clamping members on the pair of locking positioning pins are cooperated with the air inlet hole at the tail of the tenon to improve the stability of the turbine blade in the installation station.

[0027] 4. The heavy-duty gas turbine turbine blade positioning tool provided by the present application is provided with a tapered groove between the pair of locking sliders, and the fixing member extends into the tapered groove and is connected with the tapered groove. When the fixing member gradually extends into the tapered groove, the locking slider is pushed to slide to the two sides, and then the locking positioning pins on the two sides are pushed to slide to the two sides, and then the two clamping members apply opposite clamping forces to the tenon to improve the stability of the turbine blade.

[0028] 5. The heavy-duty gas turbine turbine blade positioning tool provided by the present application is provided with a waist-round slot, one of the clamping members is a waist-round positioning pin head, and the other clamping member is a polygonal positioning pin head, and the edges on the outer periphery of the polygonal positioning pin head are adapted to abut against the inner side wall of the air inlet hole. The waist-round positioning pin head is convenient for surface contact with the hole at the bottom of the tenon, and the edges of the polygonal positioning pin head are in line contact with the hole at the bottom of the tenon, which prevents the over-constraint positioning phenomenon from occurring when the waist-round positioning pin and the polygonal positioning pin act simultaneously.

[0029] 6. The heavy-duty gas turbine turbine blade positioning tool provided by the present application is provided with a mounting plate on at least one side of the positioning base, and the mounting plate is provided with a mounting hole. The positioning base can be fixedly installed on the base or the wire cutting machine tool by using the mounting plate, which is convenient for cutting and dissection of the turbine blade. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0031] Figure 1is a schematic view of the heavy-duty gas turbine turbine blade positioning tool provided in the embodiment of the present application, the cutting positioning tool shown in the figure takes the heavy-duty gas turbine turbine blade as the application example, obviously, the described application example is not all, such as the heavy-duty gas turbine compressor blade, the aero-engine compressor blade and the aero-engine turbine blade can be taken as the application example of the cutting positioning tool. Therefore, based on the application example in the present application, all other examples obtained by the person skilled in the art without the creative labor of the cutting positioning tool belong to the protection scope of the present application.

[0032] Figure 2 is a structural schematic view of the cutting positioning tool provided in the embodiment of the present application, which is composed of a positioning locker, a positioning base and a fixing bolt.

[0033] Figure 3 is a structural schematic view of the positioning locker provided in the embodiment of the present application, which mainly fixes the turbine blade and the positioning base by the positioning locker, and is composed of a locker guide base, a locking sliding block, a waist-round-shaped positioning pin, a polygonal positioning pin and a conical locking plug.

[0034] Figure 4 is a front view of the positioning locker provided in the embodiment of the present application.

[0035] Figure 5 is a sectional view along the line A-A in Figure 4 .

[0036] Figure 6 is a structural schematic view of the locker guide base provided in the embodiment of the present application.

[0037] Figure 7 is a structural schematic view of the locking sliding block provided in the embodiment of the present application.

[0038] Figure 8 is a structural schematic view of the locking positioning pin provided in the embodiment of the present application.

[0039] Figure 9 is a structural schematic view of another locking positioning pin provided in the embodiment of the present application.

[0040] Figure 10 is a structural schematic view of the conical locking plug provided in the embodiment of the present application.

[0041] Figure 11 is a structural schematic view of the positioning base provided in the embodiment of the present application, which is composed of an installation station, a positioning locking groove and a fixing screw hole.

[0042] Figure 12is a structural schematic view of a tenon provided in the specific embodiments of the present application.

[0043] Reference signs: 1, positioning locker; 11, locker guide base; 111, guide base threaded hole; 112, guide base sliding block groove; 12, locking sliding block; 121, positioning boss; 122, cambered groove; 13, locking positioning pin; 131, waist round positioning pin head; 132, guide positioning groove; 133, positioning groove; 141, polygonal positioning pin head; 15, conical locking plug; 151, driving groove; 152, cylindrical thread; 153, conical external thread; 2, positioning base; 21, installation station; 22, positioning and locking groove; 23, fixed screw hole; 24, limiting part; 3, fixed bolt; 4, tenon; 41, air inlet hole. DETAILED DESCRIPTION

[0044] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0045] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0046] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0048] Figures 1 to 12 It is a heavy gas turbine turbine blade positioning tool provided by the present embodiment, which comprises a positioning base 2 and a positioning locker 1.

[0049] The positioning base 2 is provided with a positioning locking groove 22, and one end of the positioning locking groove 22 is provided with a heavy-duty gas turbine blade mounting station 21. The mounting station 21 is provided with a clamping tooth as a limiting part 24. The limiting part cooperates with the external shape of the tenon 4 of the heavy-duty gas turbine blade and is suitable for clamping and limiting the tenon 4. Both sides of the positioning base 2 are provided with mounting plates, and each mounting plate is provided with four fixing screw holes 23 as mounting holes. The mounting station 21 is a conical groove, and the limiting part is a limiting protrusion provided on the inner wall of the conical groove. The limiting protrusion is provided on the inner wall of the conical groove in multiple. In this embodiment, the mounting station is a groove structure provided on the positioning base 2, and in other embodiments, the mounting station can also be in the form of a frame, and the clamping tooth as the limiting part 24 is provided on the frame.

[0050] The positioning locking device 1 is installed in the positioning locking groove 22, and one end of the positioning locking device 1 is provided with at least one tightening member. The tightening member is suitable for cooperating with the air inlet hole 41 at the tail of the tenon 4 to abut and lock. Specifically, the positioning locking device 1 includes a locking device guide base 11, a locking sliding block 12, a locking positioning pin 13, and a fixing bolt as a fixing member. The locking device guide base 11 is provided with a guide base sliding block groove 112 inside, and the locking device guide base 11 is provided with a guide base screw hole as a locking hole. The locking hole penetrates the locking device guide base 11, and the guide base sliding block groove 112 is communicated. The locking sliding block 12 is installed in the guide base sliding block groove 112, and one side of the locking sliding block 12 is aligned with the locking hole. The locking sliding block 12 is provided with a positioning protrusion 121 on the side facing the opening of the guide base sliding block groove 112. The locking positioning pin 13 is installed in the guide base sliding block groove 112, and the locking positioning pin 13 is provided with a positioning groove 133 on the side facing the guide base sliding block groove 112. The positioning protrusion 121 is suitable for sliding cooperation with the positioning groove 133, and the tightening member is provided at the end of the locking positioning pin 13. The fixing member penetrates the locking hole and tightly sets with the locking sliding block 12. Under the action of the tightening force of the fixing member, the locking sliding block 12 moves towards the locking positioning pin 13 to make the positioning protrusion 121 abut and cooperate with the positioning groove 133. In this embodiment, the locking sliding block 12 is provided with a pair of locking sliding blocks 12, and a pair of locking positioning pins 13 are provided on both sides of the pair of locking sliding blocks 12. A conical groove is provided between the pair of locking sliding blocks 12, the fixing member extends into the conical groove, and the fixing member is connected with the conical groove in cooperation. The fixing member is a conical locking plug 15, the conical locking plug 15 is provided with external threads, the conical groove is provided with internal threads, and the conical locking plug 15 and the conical groove are threadedly connected. In other embodiments, a cylindrical groove is provided between the pair of locking sliding blocks 12, and the fixing member is a cylindrical bolt. The outer diameter of the cylindrical bolt is slightly larger than the inner diameter of the cylindrical groove between the pair of locking sliding blocks, so that when the cylindrical bolt is screwed into the cylindrical groove, the two locking sliding blocks can move to both sides.

[0051] The air inlet holes 41 are oblong slots, one of the fastening elements is an oblong locating pin head, and the other is a polygonal locating pin head 141, and the edges on the outer periphery of the polygonal locating pin head 141 are adapted to abut against the inner side wall of the air inlet hole 41. The intermediate distance between the oblong locating pin head and the polygonal locating pin head 141 is equal to the center distance between the two air inlet holes 41 at the tail of the tenon 4. In another embodiment, the air inlet holes are polygonal slots, one of the fastening elements is a polygonal locating pin head adapted to the shape of the air inlet hole and abutting against the face of the air inlet hole, and the other is an oblong locating pin head or an oblong locating pin head abutting against the line of the air inlet hole. In another embodiment, the air inlet holes are oblong slots, one of the fastening elements is an oblong locating pin head adapted to the shape of the air inlet hole and abutting against the face of the air inlet hole, and the other is a polygonal locating pin head abutting against the line of the air inlet hole. In other embodiments, the two air inlet holes are any two different types of oblong slots, polygonal slots or oblong slots, one of the fastening elements is adapted to the shape of the air inlet hole and abutting against the face of the air inlet hole, and the other is abutting against the line of the air inlet hole. The turbine blade includes a suspended blade part and a tenon 4 part for fixation. The heavy-duty gas turbine blade positioning tool includes a positioning lock 1, a positioning base 2 and a fixing bolt 3, the positioning lock 1 includes a lock guide base 11, a lock sliding block 12, a pair of lock locating pins 13 and a tapered lock plug 15. The lock guide base 11 includes a guide base threaded hole 111 and a guide base sliding block groove 112. The lock sliding block 12 includes a locating boss 121, an arc surface groove 122 and a tapered thread. One of the lock locating pins 13 includes an oblong locating pin head 131, a guide groove 132 and a locating groove 133, and the other includes a polygonal locating pin head 141, a guide groove 132 and a locating groove 133. The lock plug includes a driving groove 151, a cylindrical thread 152 and a tapered external thread 153. The positioning base 2 includes a mounting station 21, a positioning lock groove 22 and a fixing screw hole 23 adapted to cooperate with the fixing bolt 3.

[0052] The turbine blade is clamped by matching the positioning lock 1 with the positioning base 2. First, the two lock sliding blocks 12 with positioning bosses 121 are inserted into the guide sliding block grooves 112 of the lock guide 11, and then the guide grooves 132 of the lock positioning pins 13 with the waist round positioning pin heads and the guide grooves 132 of the lock positioning pins 13 with the polygonal positioning pin heads 141 are slid along the arc grooves 122 on both sides of the lock, until the positioning grooves 133 of the lock positioning pins 13 with the waist round positioning pin heads and the positioning grooves 133 of the lock positioning pins 13 with the polygonal positioning pin heads 141 are matched with the positioning bosses 121 on both sides of the lock sliding block 12. The tapered lock plug 15 is rotated into the lock guide 11 along the guide threaded hole 111 with a hexagonal screwdriver, so that the tapered lock plug 15 is slightly matched with the lock sliding block 12, and the positioning lock 1 is inserted into the positioning base 2 along the positioning lock groove 22, and the insertion position is about to the intersection edge of the installation station 21 and the positioning lock groove 22.

[0053] Then, the tenon 4 of the heavy-duty turbine blade is inserted along one side of the installation station 21 of the positioning base 2, until the tenon 4 inserted first reaches the end of the installation station 21, ensuring that one side of the tenon 4 is flush with the end of the installation station 21. The tapered lock plug 15 is again matched with the lock sliding block 12 using a hexagonal screwdriver, at this time not only the waist round positioning pin head 131 and the polygonal positioning pin head 141 have been completely inserted into the hole at the bottom of the tenon 4, but also the two lock positioning pins 13 are gradually spread to both sides due to the sliding of the lock sliding block 12, so that the blade tenon 4 is completely clamped and positioned. The positioning base 2 with the positioned blade can be placed on the workbench of the wire cut electrical discharge machine, and fixed with the workbench by the fixing bolt 3, ensuring the accuracy and stability of positioning. The positioning of the large-sized special-shaped turbine blade is realized by the positioning lock 1, the positioning base 2 and the fixing bolt 3, which has the advantages of simple structure, convenient cutting, easy operation and low tooling cost.

[0054] The two sides of the lock guide 11 are penetrated by the guide sliding block grooves 112, which facilitates the insertion of the two lock sliding blocks 12 along the guide sliding block grooves 112 on both sides; the front of the lock guide 11 contains a guide threaded hole 111, which is a circular thread with a thread inner diameter matched with the maximum thread outer diameter of the tapered lock plug 15.

[0055] The front of the two locking sliders 12 contains half of the tapered thread, when the locking slider 12 is extruded by the tapered locking plug 15, the tapered thread not only has stronger pressure resistance, but also can more accurately control the positioning boss 121 to move to both sides. The two sides of the locking slider 12 contain the positioning boss 121, which is used for the positioning groove 133 on the two locking positioning pins 13, and the length of the positioning groove 133 is greater than the length of the positioning boss 121, the purpose is to prevent the positioning lock 1 from being locked, and when the locking slider 12 is extruded by the tapered locking plug 15, the locking slider 12 can move to both sides, so that the positioning lock 1 achieves the locking effect. The matching use of the waist round positioning pin head and the polygonal positioning pin head 141 is because the waist round positioning pin head 131 is convenient for face contact with the hole at the bottom of the tenon 4, and the edge of the polygonal positioning pin head 141 is in line contact with the hole at the bottom of the tenon 4, which prevents the over-constrained positioning phenomenon from occurring when the waist round positioning pin head and the polygonal positioning pin head 141 act at the same time.

[0056] The positioning tool contains symmetrical distributed screw holes and fixing bolts 3 on both sides of the positioning base 2, when the positioning tool is placed on the workbench of the wire cut electrical discharge machine, the fixing bolts 3 can be used to fix the positioning tool, preventing the positioning tool from deviating due to the shaking of the wire cutting machine during work.

[0057] When assembling the positioning lock 1, the two locking sliders 12 are inserted along the guide slider groove 112 on both sides of the lock guide base 11, and the positioning boss 121 is placed outward. The guide groove 132 of the two locking positioning pins 13 is slid along the arc groove 122 on both sides of the lock, until the positioning groove 133 of the two locking positioning pins 13 cooperates with the positioning boss 121 on both sides of the locking slider 12, wherein the length and width of the positioning groove 133 is slightly larger than the design size of the positioning boss 121, the purpose is that when the locking slider 12 is extruded by the tapered locking plug 15, the locking slider 12 can move to both sides, preventing the positioning lock 1 from being locked, and at the same time, the positioning lock 1 achieves the locking effect, so the gap cooperation between the size of the positioning groove 133 and the positioning boss 121 is reasonable when assembling. The tapered locking plug 15 is inserted into the lock guide base 11 along the guide thread hole 111 and twisted by using a hexagonal screwdriver, so that the tapered locking plug 15 cooperates with the locking slider 12. During the process of twisting the tapered locking plug 15 by using a hexagonal screwdriver, it is necessary to twist as lightly as possible, so that the two locking positioning pins 13 do not fall off, but do not expand too much to both sides, so that the two locking positioning pins 13 are as parallel as possible to the guide slider groove 112. At this time, the positioning lock 1 is assembled.

[0058] The positioning lock 1 is slowly inserted into the positioning base 2 along the positioning locking groove 22, and the insertion position is about to the intersection edge of the installation station 21 and the positioning locking groove 22. The tenon 4 of the heavy-duty gas turbine blade is inserted along one side of the installation station 21 of the positioning base 2 until the inserted tenon 4 reaches the end of the installation station 21, and the tenon 4 is ensured to be flush with the end of the installation station 21. The conical locking plug 15 is twisted and inserted again with the hexagonal screwdriver, the waist round positioning pin head 131 and the polygonal positioning pin head 141 are completely inserted into the hole at the bottom of the tenon 4, and the locking slider 12 is used to stretch the two locking positioning pins 13 to the two sides, so that the heavy-duty gas turbine blade tenon 4 is completely clamped, and the heavy-duty gas turbine blade is positioned. The positioning base 2 embedded with the heavy-duty gas turbine blade and the positioning lock 1 is placed on the workbench of the online cutting machine, and the positioning base 2 is fixed on the workbench of the online cutting machine through the fixing bolt 3, so as to realize the cutting positioning of the heavy-duty gas turbine blade.

[0059] Obviously, the above embodiments are only examples for clearly illustrating the present application, and are not intended to limit the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. All the embodiments do not need to be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A heavy duty gas turbine turbine vane positioning fixture, characterized by, The utility model relates to a positioning base (2) is provided with positioning locking groove (22) on it, one end of positioning locking groove (22) is provided with heavy duty gas turbine blade installation station (21), the installation station (21) is provided with limit portion, limit portion cooperates with the external shape of tenon (4) of heavy duty gas turbine blade, limit portion is suitable for clamping and limiting tenon (4); Positioning locker (1) is installed in positioning locking groove (22), one end of positioning locker (1) is provided with jacking part, jacking part is suitable for the abutment locking of air inlet hole (41) of tail portion of tenon (4) cooperation; Air inlet hole (41) of tail portion of tenon (4) is waist round slot, one of jacking part is waist round positioning pin head (131), the other jacking part is polygonal positioning pin head (141), and the edge of the outer periphery side of polygonal positioning pin head (141) is suitable for the abututment of the inner side wall of air inlet hole (41), the intermediate spacing between waist round positioning pin head (131) and polygonal positioning pin head (141) is equal to the center spacing between two air inlet holes (41) of tenon (4) tail portion; Positioning locker (1) comprises: Locker guide base (11) is provided with guide base sliding groove (112) in it, locker guide base (11) is provided with locking hole, locking hole communicates with guide base sliding groove (112) through locker guide base (11); Locking sliding block (12) is installed in guide base sliding groove (112), and one side of locking sliding block (12) is aligned with locking hole, and locking sliding block (12) is provided with positioning boss (121) on the side of the opening of guide base sliding groove (112); Locking positioning pin (13) is installed in guide base sliding groove (112), locking positioning pin (13) is provided with positioning groove (133) on the side of guide base sliding groove (112), positioning boss (121) is suitable for sliding cooperation with positioning groove (133), and jacking part is arranged at the end of locking positioning pin (13); Fixing part is jacked through locking hole and locking sliding block (12), under the jacking force of fixing part, locking sliding block (12) moves towards locking positioning pin (13) to make positioning boss (121) and positioning groove (133) abut tightly; Locking sliding block (12) is provided with a pair, and a pair of locking sliding block (12) is provided with a pair of locking positioning pin (13). A pair of locking sliding block (12) is provided with tapered groove, and fixing part extends into tapered groove, and fixing part is connected with tapered groove in cooperation.

2. The heavy-duty gas turbine turbine vane positioning fixture of claim 1, wherein, The fixing part is a tapered locking screw plug (15), the tapered locking screw plug (15) is provided with external threads, the tapered groove is provided with internal threads, and the tapered locking screw plug (15) is threadedly connected with the tapered groove.

3. The heavy-duty gas turbine turbine vane positioning fixture of claim 2, wherein, At least one side of positioning base (2) is provided with mounting plate, and mounting hole is arranged on mounting plate.

4. The heavy-duty gas turbine turbine vane positioning fixture of any one of claims 1 to 3, wherein, ​ 5. The heavy-duty gas turbine turbine vane positioning fixture of any one of claims 1 to 3, wherein, The mounting station (21) is a tapered groove, and the limiting part (24) is a limiting protrusion arranged on the inner wall of the tapered groove.

6. The heavy-duty gas turbine turbine vane positioning fixture of claim 5, wherein, The limiting protrusions are arranged on the inner wall of the tapered groove in a spaced manner.

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